Pith Number

pith:ZTL5XISI

pith:2012:ZTL5XISIMN23FP5CA2C2XBCOQD

not attested not anchored not stored refs pending

Combinatorics of combinatorial topology

Sergey A. Melikhov

arxiv:1208.6309 v2 · 2012-08-30 · math.GT · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZTL5XISIMN23FP5CA2C2XBCOQD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:06:53.756578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccd7dba2486375b2bfa20685ab844e80df51a507854afd3c372b7c18c25f5292

Aliases

arxiv: 1208.6309 · arxiv_version: 1208.6309v2 · doi: 10.48550/arxiv.1208.6309 · pith_short_12: ZTL5XISIMN23 · pith_short_16: ZTL5XISIMN23FP5C · pith_short_8: ZTL5XISI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZTL5XISIMN23FP5CA2C2XBCOQD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ccd7dba2486375b2bfa20685ab844e80df51a507854afd3c372b7c18c25f5292

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba12a067069565d3ccb9285c6a619229813d1adeb37396a1985954c5e9ecaf5f",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-08-30T20:40:19Z",
    "title_canon_sha256": "f1de292c3047dbd5fece6e16e9cee398594064b2906e6978886a4a7386663aba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.6309",
    "kind": "arxiv",
    "version": 2
  }
}